Figure 2 : Putative iridoid glycosides as discriminatory features between leaves of F. excelsior genotypes with differential susceptibility to ADB.

From: Ash leaf metabolomes reveal differences between trees tolerant and susceptible to ash dieback disease

Figure 2

(a) Multivariate analysis PLS-DA score plot showing discrimination of five susceptible and five tolerant trees, each replicated three times, based on their leaf metabolite profiles. (b) MS/MS fragmentation network of LC-ESI-MS/MS fragmentation data for discriminatory features of high and low susceptibility genotypes. The size of each circle represents the fragment size. The intensity of blue increases as the number of times each fragment is present in all precursor ions increases. The edges are in shades of red based on retention time; the paler the colour the earlier the retention time. The black (POS) and grey (NEG) features are the discriminatory features. The outside ring shows fragments unique to that precursor ion (i.e., not in the other precursor ions). The inside circle is ‘shared’ fragments, present in more than one precursor ion. Those fragment masses shaded in green have been previously reported from fragmentation of iridoid glycosides41. Figure adapted from Sollars et al.19.